document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=299622>Question 299622</A>: <I><SPAN STYLE=\"word-break: break-all;\"> at maximum speed, an airplane travels 2400 miles against the wind in 6 hours. Flying with the wind, the plane can travel the same distance in 5 hours.<BR>\n" );
document.write( "what is the speed of the airplane with no wind? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #215245 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=215245\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let speed of plane in still air bex\r<BR>\n" );
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document.write( "and wind rate be y\r<BR>\n" );
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document.write( "2400 / x-y = 6\r<BR>\n" );
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document.write( "2400/6 = x-y\r<BR>\n" );
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document.write( "400 = x-y\r<BR>\n" );
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document.write( "2400 / x+y=5\r<BR>\n" );
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document.write( "x+y = 480\r<BR>\n" );
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document.write( "x-y+ x+y = 480+400\r<BR>\n" );
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document.write( "2x=880\r<BR>\n" );
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document.write( "x=440 mph  rate of plane in still air\r<BR>\n" );
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document.write( "so y= 40 mph rate of wind </SPAN>\n" );
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